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Finding the Fourth Proportional to 661,692.10, 992,052.15 and 262,135.30

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Solution

The fourth proportional to 661,692.10, 992,052.15 and 262,135.30 is: 393,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,692.10 : 992,052.15 = 262,135.30 : x
  2. Step 2: Convert to fraction form
    661,692.10/992,052.15 = 262,135.30/x
  3. Step 3: Cross multiply
    661,692.10x = 992,052.15 × 262,135.30
  4. Step 4: Simplify right side
    661,692.10x = 260,051,887,955.90
  5. Step 5: Solve for x
    x = 260,051,887,955.90/661,692.10
  6. Step 6: Final answer
    x = 393,010.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.